USB2534 - USB 2.0 Hi-Speed 4-Port Hub Controller

1 2014 Microchip Technology 1 DatasheetPRODUCT FEATURESUSB2534 USB Hi-Speed 4-Port Hub ControllerHighlights Hub Controller IC with 4 downstream ports USB-IF Battery Charger revision support on up & downstream ports (DCP, CDP, SDP) Battery charging support for Apple devices FlexConnect: Downstream port 1 able to swap with upstream port, allowing master capable devices to control other devices on the hub USB to I2 CTM bridge endpoint support USB Link Power Management (LPM) support SUSPEND pin for remote wakeup indication to host Vendor Specific Messaging (VSM) support Enhanced OEM configuration options available through a single serial I2 CTM EEPROM, OTP, or SMBus Slave Port 36-pin (6x6mm) SQFN, RoHS compliant package Footprint compatible with USB2514 BTarget Applications LCD monitors and TVs Multi-function USB peripherals PC mother boards Set-top boxes, DVD players, DVR/PVR Printers and scanners PC media drive bay Portable hub boxes Mobile PC docking Embedded systemsAdditional Features MultiTRAKTM Dedicated Transaction Translator per port PortMap Configurable port mapping and disable sequencing PortSwap Configurable differential intra-pair signal swapping PHYB oostTM Programmable USB transceiver drive strength for recovering signal integrity VariSenseTM Programmable USB receiver sensitivity Low power operation Full Power Management with individual or ganged power control of each downstream port Built-in Self-Powered or Bus-Powered internal default settings provide flexibility in the quantity of USB expansion ports utilized without redesign Supports Quad Page configuration OTP flash Four consecutive 200 byte configuration pages Fully integrated USB termination and Pull-up/Pull-down resistors On-chip Power On Reset (POR)

2 Internal and voltage regulators On Board 24 MHz Crystal Driver, Resonator, or External 24 MHz clock input Environmental Commercial temperature range support (0 C to 70 C) Industrial temperature range support (-40 C to 85 C)Order Number(s):This product meets the halogen maximum concentration values per IEC61249-2-21 The table above represents valid part numbers at the time of printing and may not represent parts that are currentlyavailable. For the latest list of valid ordering numbers for this product, please contact the nearest sales office. ORDER NUMBERTEMPERATURE RANGEPACKAGE TYPEUSB2534-1080 AEN (Battery Charging disabled by default)0 C to +70 C36-pin SQFNUSB2534-1050 AEN (Battery Charging enabled by default) USB2534 -1080 AEN-TR (Battery Charging disabled by default)0 C to +70 C36-pin SQFN(Tape & Reel) USB2534 -1050 AEN-TR (Battery Charging enabled by default)USB2534i-1080 AEN (Battery Charging disabled by default)-40 C to +85 C36-pin SQFNUSB2534i-1050 AEN (Battery Charging enabled by default)USB2534i-1080 AEN-TR (Battery Charging disabled by default)-40 C to +85 C36-pin SQFN(Tape & Reel)USB2534i-1050 AEN-TR (Battery Charging enabled by default)USB Hi-Speed 4-Port Hub ControllerDatasheetDS00001713A-page 2 2014 Microchip Technology OUR VALUED CUSTOMERSIt is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchipproducts.

3 To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined andenhanced as new volumes and updates are introduced. If you have any questions or comments regarding this publication, please contact the Marketing Communications Department viaE-mail at We welcome your Current Data SheetTo obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at: can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page. The last character of the literature number is the version number, ( , DS30000000A is version A of document DS30000000).ErrataAn errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for cur-rent devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify therevision of silicon and revision of document to which it determine if an errata sheet exists for a particular device, please check with one of the following: Microchip s Worldwide Web site; Your local Microchip sales office (see last page)When contacting a sales office, please specify which device, revision of silicon and data sheet (include -literature number) you Notification SystemRegister on our web site at to receive the most current information on all of our Hi-Speed 4-Port Hub ControllerDatasheet 2014 Microchip Technology 3 Table of ContentsChapter 1 General Description.

4 Block Diagram .. 8 Chapter 2 Acronyms and Definitions .. Acronyms.. Reference Documents .. 9 Chapter 3 Pin Descriptions .. Pin Descriptions.. Pin Assignments .. Buffer Type Descriptions .. 21 Chapter 4 Power Connections .. Integrated Power Regulators .. Power Connection Diagrams .. 22 Chapter 5 Modes of Operation .. Boot Sequence .. Standby Mode .. Hardware Initialization Stage (HW_INIT) .. Software Initialization Stage (SW_INIT) .. SOC Configuration Stage (SOC_CFG) .. Configuration Stage (CONFIG) .. Battery Charger Detection Stage (CHGDET) .. Hub Connect Stage ( ) .. Normal Mode .. 26 Chapter 6 Device Configuration .. Configuration Method Selection .. Customer Accessible Functions .. USB Accessible Functions.. SMBus Accessible Functions .. Device Configuration Straps .. Non-Removable Device (NON_REM[1:0]) .. Configuration Select (CFG_SEL[1:0]) .. Downstream Battery Charging Enable (BC_EN[4:1]).

5 Port Disable (PRT_DIS_Mx/PRT_DIS_Px) .. 31 Chapter 7 Device Interfaces .. I2C Master Interface .. I2C Message Format .. Pull-Up Resistors for I2C .. SMBus Slave Interface .. 33 Chapter 8 Functional Descriptions .. Battery Charger Detection & Charging .. Upstream Battery Charger Detection.. 34 USB Hi-Speed 4-Port Hub ControllerDatasheetDS00001713A-page 4 2014 Microchip Technology Downstream Battery Charging.. Flex Connect .. Port Control .. Resets .. Power-On Reset (POR) .. External Chip Reset (RESET_N) .. USB Bus Reset .. Link Power Management (LPM) .. Remote Wakeup Indicator (SUSP_IND) .. Normal Resume Behavior .. Modified Resume Behavior .. High speed Indicator (HS_IND) .. 40 Chapter 9 Operational Characteristics.. Absolute Maximum Ratings* .. Operating Conditions** .. Power Consumption .. Operational / Unconfigured .. Suspend / Standby .. DC Specifications .. AC Specifications.

6 Power-On Configuration Strap Valid Timing .. Reset and Configuration Strap Timing.. USB Timing .. SMBus Timing .. I2C Timing .. Clock Specifications .. Oscillator/Crystal .. External Reference Clock (REFCLK) .. 47 Chapter 10 Package Outline .. 48 Chapter 11 Datasheet Revision History .. 50 USB Hi-Speed 4-Port Hub ControllerDatasheet 2014 Microchip Technology 5 List of FiguresFigure System Block Diagram.. 8 Figure 36-SQFN Pin Assignments .. 10 Figure Power Connections .. 22 Figure Hub Operational Mode Flowchart .. 24 Figure I2C Sequential Access Write Format .. 32 Figure I2C Sequential Access Read Format .. 33 Figure Battery Charging External Power Supply.. 35 Figure Supply Rise Time Model .. 42 Figure Power-On Configuration Strap Valid Timing .. 45 Figure RESET_N Configuration Strap Timing.. 46 Figure 36-SQFN Package Drawing.. 48 USB Hi-Speed 4-Port Hub ControllerDatasheetDS00001713A-page 6 2014 Microchip Technology of TablesTable Pin Descriptions.

7 11 Table 36-SQFN Package Pin Assignments.. 20 Table Buffer Types .. 21 Table Hub Configuration Selection .. 27 Table NON_REM[1:0] Configuration Definitions .. 30 Table PRT_DIS_Mx/PRT_DIS_Px Configuration Definitions .. 31 Table Chargers Compatible with Upstream Detection.. 34 Table Downstream Port Types .. 36 Table LPM State Definitions .. 38 Table Operational/Unconfigured Power Consumption .. 43 Table Suspend/Standby Power Consumption .. 43 Table DC Electrical Characteristics .. 44 Table Power-On Configuration Strap Valid Timing .. 45 Table RESET_N Configuration Strap Timing .. 46 Table Crystal Specifications .. 47 Table Revision History.. 50 USB Hi-Speed 4-Port Hub ControllerDatasheet 2014 Microchip Technology 7 Chapter 1 General DescriptionThe USB2534 is a low-power, OEM configurable, MTT (Multi-Transaction Translator) USB hubcontroller with 4 downstream ports and advanced features for embedded USB applications.

8 TheUSB2534 is fully compliant with the USB Specification, USB Link Power ManagementAddendum and will attach to an upstream port as a Full- speed hub or as a Full-/ Hi-Speed hub. The4-port hub supports Low- speed , Full- speed , and Hi-Speed (if operating as a Hi-Speed hub)downstream devices on all of the enabled downstream ports . The USB2534 has been specifically optimized for embedded systems where high performance, andminimal BOM costs are critical design requirements. Standby mode power has been minimized andreference clock inputs can be aligned to the customer s specific application. Additionally, all requiredresistors on the USB ports are integrated into the hub, including all series termination and pull-up/pull-down resistors on the D+ and D USB2534 supports both upstream battery charger detection and downstream battery USB2534 integrated battery charger detection circuitry supports the USB-IF Battery Charging( ) detection method and most Apple devices.

9 These circuits are used to detect the attachmentand type of a USB charger and provide an interrupt output to indicate charger information is availableto be read from the device s status registers via the serial interface. The USB2534 provides the batterycharging handshake and supports the following USB-IF charging profiles: DCP: Dedicated Charging Port (Power brick with no data) CDP: Charging Downstream Port ( with data) SDP: Standard Downstream Port ( with data) Custom profiles loaded via SMBus or OTPThe USB2534 provides an additional USB endpoint dedicated for use as a USB to I2C interface,allowing external circuits or devices to be monitored, controlled, or configured via the USB , the USB2534 includes many powerful and unique features such as:FlexConnect, which provides flexible connectivity options. The USB2534 s downstream port 1 can beswapped with the upstream port, allowing master capable devices to control other devices on the Technology, which utilizes a dedicated Transaction Translator (TT) per port to maintainconsistent full- speed data throughput regardless of the number of active downstream outperforms conventional USB hubs with a single TT in USB full- speed data transfers.

10 PortMap, which provides flexible port mapping and disable sequences. The downstream ports of aUSB2534 hub can be reordered or disabled in any sequence to support multiple platform designs withminimum effort. For any port that is disabled, the USB2534 hub controllers automatically reorder theremaining ports to match the USB host Controller s port numbering , which adds per-port programmability to USB differential-pair pin locations. PortSwap allowsdirect alignment of USB signals (D+/D-) to connectors to avoid uneven trace length or crossing of theUSB differential signals on the , which provides programmable levels of Hi-Speed USBsignal drive strength in the downstream port transceivers. PHYB oostattempts to restore USB signal integrity in a compromised systemenvironment. The graphic on the right shows an example of Hi-Speed USB eye diagrams before and after PHYB oost signal , which controls the USB receiver sensitivity enabling programmable levels of USB signalreceive sensitivity.